C++ QWeakPointer::toStrongRef方法代码示例

QSharedPointer<FrameBuffer> FrameBufferManager::frameBuffer(WId id)
{
    //qDebug();

    // See if there is still an existing framebuffer to this WId.
    if (m_frameBuffers.contains(id)) {
        QWeakPointer<FrameBuffer> weakFrameBuffer = m_frameBuffers.value(id);

        if (weakFrameBuffer) {
            //qDebug() << "Found cached frame buffer.";
            return weakFrameBuffer.toStrongRef();
        } else {
            //qDebug() << "Found deleted cached frame buffer. Don't use.";
            m_frameBuffers.remove(id);
        }
    }

    // We don't already have that frame buffer.
    QMap<QString, FrameBufferPlugin *>::const_iterator iter = m_plugins.constBegin();

    while (iter != m_plugins.constEnd()) {

        if (iter.key() == KrfbConfig::preferredFrameBufferPlugin()) {
            qDebug() << "Using FrameBuffer:" << KrfbConfig::preferredFrameBufferPlugin();

            QSharedPointer<FrameBuffer> frameBuffer(iter.value()->frameBuffer(id));

            if (frameBuffer) {
                m_frameBuffers.insert(id, frameBuffer.toWeakRef());

                return frameBuffer;
            }
        }

        ++iter;
    }

    // No valid framebuffer plugin found.
    qDebug() << "No valid framebuffer found. returning null.";
    return QSharedPointer<FrameBuffer>();
}

void GeometryReader::run() {
    DependencyManager::get<StatTracker>()->decrementStat("PendingProcessing");
    CounterStat counter("Processing");
    PROFILE_RANGE_EX(resource_parse_geometry, "GeometryReader::run", 0xFF00FF00, 0, { { "url", _url.toString() } });
    auto originalPriority = QThread::currentThread()->priority();
    if (originalPriority == QThread::InheritPriority) {
        originalPriority = QThread::NormalPriority;
    }
    QThread::currentThread()->setPriority(QThread::LowPriority);
    Finally setPriorityBackToNormal([originalPriority]() {
        QThread::currentThread()->setPriority(originalPriority);
    });

    if (!_resource.data()) {
        return;
    }

    try {
        if (_data.isEmpty()) {
            throw QString("reply is NULL");
        }

        // Ensure the resource has not been deleted
        auto resource = _resource.toStrongRef();
        if (!resource) {
            qCWarning(modelnetworking) << "Abandoning load of" << _url << "; could not get strong ref";
            return;
        }

        if (_url.path().isEmpty()) {
            throw QString("url is invalid");
        }

        HFMModel::Pointer hfmModel;
        QVariantHash serializerMapping = _mapping.second;
        serializerMapping["combineParts"] = _combineParts;
        serializerMapping["deduplicateIndices"] = true;

        if (_url.path().toLower().endsWith(".gz")) {
            QByteArray uncompressedData;
            if (!gunzip(_data, uncompressedData)) {
                throw QString("failed to decompress .gz model");
            }
            // Strip the compression extension from the path, so the loader can infer the file type from what remains.
            // This is okay because we don't expect the serializer to be able to read the contents of a compressed model file.
            auto strippedUrl = _url;
            strippedUrl.setPath(_url.path().left(_url.path().size() - 3));
            hfmModel = _modelLoader.load(uncompressedData, serializerMapping, strippedUrl, "");
        } else {
            hfmModel = _modelLoader.load(_data, serializerMapping, _url, _webMediaType.toStdString());
        }

        if (!hfmModel) {
            throw QString("unsupported format");
        }

        if (hfmModel->meshes.empty() || hfmModel->joints.empty()) {
            throw QString("empty geometry, possibly due to an unsupported model version");
        }

        // Add scripts to hfmModel
        if (!serializerMapping.value(SCRIPT_FIELD).isNull()) {
            QVariantList scripts = serializerMapping.values(SCRIPT_FIELD);
            for (auto &script : scripts) {
                hfmModel->scripts.push_back(script.toString());
            }
        }

        // Do processing on the model
        baker::Baker modelBaker(hfmModel, _mapping.second, _mapping.first);
        modelBaker.run();

        auto processedHFMModel = modelBaker.getHFMModel();
        auto materialMapping = modelBaker.getMaterialMapping();

        QMetaObject::invokeMethod(resource.data(), "setGeometryDefinition",
                Q_ARG(HFMModel::Pointer, processedHFMModel), Q_ARG(MaterialMapping, materialMapping));
    } catch (const std::exception&) {
        auto resource = _resource.toStrongRef();
        if (resource) {
            QMetaObject::invokeMethod(resource.data(), "finishedLoading",
                Q_ARG(bool, false));
        }
    } catch (QString& e) {
        qCWarning(modelnetworking) << "Exception while loading model --" << e;
        auto resource = _resource.toStrongRef();
        if (resource) {
            QMetaObject::invokeMethod(resource.data(), "finishedLoading",
                                      Q_ARG(bool, false));
        }
    }
}

QSharedPointer<QObject> sharedFrom(const QObject *object)
{
    QWeakPointer<QObject> weak = WeakPointers()->value(object);
    return weak.toStrongRef();
}

AutomatedRssDownloader::AutomatedRssDownloader(const QWeakPointer<RssManager>& manager, QWidget *parent) :
  QDialog(parent),
  ui(new Ui::AutomatedRssDownloader),
  m_manager(manager), m_editedRule(0)
{
  ui->setupUi(this);
  // Icons
  ui->removeRuleBtn->setIcon(IconProvider::instance()->getIcon("list-remove"));
  ui->addRuleBtn->setIcon(IconProvider::instance()->getIcon("list-add"));

  // Ui Settings
  ui->listRules->setSortingEnabled(true);
  ui->listRules->setSelectionMode(QAbstractItemView::ExtendedSelection);
  ui->treeMatchingArticles->setSortingEnabled(true);
  ui->hsplitter->setCollapsible(0, false);
  ui->hsplitter->setCollapsible(1, false);
  ui->hsplitter->setCollapsible(2, true); // Only the preview list is collapsible
  bool ok; Q_UNUSED(ok);
  ok = connect(ui->checkRegex, SIGNAL(toggled(bool)), SLOT(updateFieldsToolTips(bool)));
  Q_ASSERT(ok);
  ok = connect(ui->listRules, SIGNAL(customContextMenuRequested(const QPoint&)), this, SLOT(displayRulesListMenu(const QPoint&)));
  Q_ASSERT(ok);
  m_ruleList = manager.toStrongRef()->downloadRules();
  m_editableRuleList = new RssDownloadRuleList; // Read rule list from disk
  initLabelCombobox();
  loadFeedList();
  loadSettings();
  ok = connect(ui->listRules, SIGNAL(itemSelectionChanged()), SLOT(updateRuleDefinitionBox()));
  Q_ASSERT(ok);
  ok = connect(ui->listRules, SIGNAL(itemSelectionChanged()), SLOT(updateFeedList()));
  Q_ASSERT(ok);
  ok = connect(ui->listFeeds, SIGNAL(itemChanged(QListWidgetItem*)), SLOT(handleFeedCheckStateChange(QListWidgetItem*)));
  Q_ASSERT(ok);
  // Update matching articles when necessary
  ok = connect(ui->lineContains, SIGNAL(textEdited(QString)), SLOT(updateMatchingArticles()));
  Q_ASSERT(ok);
  ok = connect(ui->lineContains, SIGNAL(textEdited(QString)), SLOT(updateMustLineValidity()));
  Q_ASSERT(ok);
  ok = connect(ui->lineNotContains, SIGNAL(textEdited(QString)), SLOT(updateMatchingArticles()));
  Q_ASSERT(ok);
  ok = connect(ui->lineNotContains, SIGNAL(textEdited(QString)), SLOT(updateMustNotLineValidity()));
  Q_ASSERT(ok);
  ok = connect(ui->checkRegex, SIGNAL(stateChanged(int)), SLOT(updateMatchingArticles()));
  Q_ASSERT(ok);
  ok = connect(ui->checkRegex, SIGNAL(stateChanged(int)), SLOT(updateMustLineValidity()));
  Q_ASSERT(ok);
  ok = connect(ui->checkRegex, SIGNAL(stateChanged(int)), SLOT(updateMustNotLineValidity()));
  Q_ASSERT(ok);
  ok = connect(this, SIGNAL(finished(int)), SLOT(on_finished(int)));
  Q_ASSERT(ok);
  editHotkey = new QShortcut(QKeySequence("F2"), ui->listRules, 0, 0, Qt::WidgetShortcut);
  ok = connect(editHotkey, SIGNAL(activated()), SLOT(renameSelectedRule()));
  Q_ASSERT(ok);
  ok = connect(ui->listRules, SIGNAL(doubleClicked(QModelIndex)), SLOT(renameSelectedRule()));
  Q_ASSERT(ok);
  deleteHotkey = new QShortcut(QKeySequence(QKeySequence::Delete), ui->listRules, 0, 0, Qt::WidgetShortcut);
  ok = connect(deleteHotkey, SIGNAL(activated()), SLOT(on_removeRuleBtn_clicked()));
  Q_ASSERT(ok);
  updateRuleDefinitionBox();
  updateFeedList();
}